Floor.



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Illllllll PATEN'IED JAN. 14, 1908.

FLOOR.

T. CANTWELL.

APPLICATION FILED JAN. 4, 1907.

- lventor UNITED STATES PATENT 'OFFOE THOMAS OANTWELL. OF NEW YORK, N. Y., ASSIGNOR OF ONE-HALF TO JAMES O. BEERS,

JR., OF BROOKLYN, NEW YORK.

FLOOR.

Patented Jan. 14, 1908.

Application ziled J auuary lM1907. Serial No. 850.772.

To all whom it may concern:

Be it known that I, THOMAS CANTWELL, a citizen of the United States, andA resident of borough of Brooklyn, county of Kings, city and State of New York, have invented certain new and useful Improvements in Floors, of which the following is a specification accompanied by drawings. l

This invention relates to floors, more particularly to floors adapted to be used in lireproof or similar buildings.

The objects of the invention are to enable a floor composed of wooden or like strips to be secured to a lower plasticcourse, which may be of cement, concrete or any similar desired material.

Another object of the invention is to imrove upon the clamp by means of which the ower and upper courses are connected In the accompanying drawings Figure 1 is a top plan view of a portion of a floor embodying the invention, partly broken away; Fig. 2 is a transverse detail sectional elevation on the line 2-2 of Fig. 1, looking in the direction of the arrows and partly broken away;

A Fig. 3 is a detail perspective view of the clamp illustrated in Figs. 1 and 2 Fig. 4 is a detail pers ective view of a plate adapted to be use to secure portions of the floor; Fig. 5 is a transverse sectional yview through one of the floor bottoms taken on' the line 5 of Fig. 2, looking in the direction of the arrow; Fig. 6 is a side elevation of a modification of the clamp.

Referring to the drawings,l A represents a l lower course of cementitious material as ceadapted to be secured thereto by suitable.

means constructed in accordance with this invention. At distances apart corresponding substantially to the width of the wood strips E, which form the upper course of the floor, are formed recesses F extending on each side of the bars B, and these may either be made before the floor is set or picked out afterward as desired. are preferably rovided with rabbeted edges G adapted to Fe placed opposite each other and forming a groove in which are laid the strips H; 1

In Fig. 3 one form of the clamp is shown in the form of a piece of sheet metal having a body portion I slotted .at J to form the tongue K, which is bent upon the body portion I in the op osite direction to the direction of extent of the holding strips L, which form a fork. Preferably the ends of the fork L are bent downwardly at O to form retaining hooks. The jaw formed between the body ortion l and the tongue K of the clamp is p aced over the flange or web D of a bar B in one of the recesses F in the cementitious portion of the structure. The rabbeted strips E are placed on each side of the clamp, and. means are provided for securing the strips E to the clamp;

In the form screw P extends between the clamping strips L forming the fork, and a nut Q is adapted to be placed on the end of the screw P. The head of the screw P may be large enough to bridge across the space between the rabbeted portionsl of the stri sE, or else the screw may be rovided wlth a'washer or plate R,

preferab y countersunk in the recessed por#-` tions S in the stri s E. The down-turned ends O of the portions L of the clamp serve The floor strips E of' device shown in Fig. 3, a 'l to hold the nut Q in position. The screw may either be thrust straight down between theV portions L of the clamp 'and the screw placed on the end of the nut and held by a suitable' tool while the screw is tightened up, or else the nut may first be placed in position on the end of the screw., and'A then the screw Vmay be thrust sidewise or Alongitudinally between the portions L of the clamp and tightened up as before. According to this construction the floor strips are securely held to the bars B. l

- If desired, the, clamp may be constructed as in Fig. 6, in which the clamp is made in one piece and the body'portion X is prefer-I ably ofthe same height throughout, and` provided with a screw-threaded socket or aperture Y.

It will be seen that thebars B of my floor take the place of the wooden sleepers, which it has heretofore been customary to lay in ar cement floor. were laidwhile the floor was in a wet condi- As these wooden sleepers tion, that is before the cement had set, they were very subject to dry rot by which their durability was decreased. The iron sleepers or bars of my floor will last as long vas the cementitious structure itself.,

Obviously some features of this invention may be used without others and the invention may be embodied in widely varying forms, therefore, without limiting the invention to the devices shown and described, and without enumerating equivalents, I claim and desire to obtain by Letters Patent the following 1. A floor comprising a lower lastic course, a clamp engaging barsecured t erein, a laterally projecting flange, an up er course of strips laid transversely of said ar, and a clamp comprising a body member, jaws engaging the upper and lower surface of the flange on said bar, and means for securing the strips of` the. said upper course to the clamp.

2. A floor comprising a lower lastic course, a clamp engaging bar secured t ierein, a laterally projecting flange, an upper course of strips laid transversely of said bar, anda clamp comprising a body member, jaws engaging the upper and lower surface of the flange on said bar, and a bolt and nut for securing the strips of the said upper course to the clamp.

3. A floor comprising a lower course, a clamp engaging bar secured t a laterally projecting flange, an upper Iplastic CO'llI'Se erein,

ofv strips laid transversely of said bar, a clamp comprising a body member, jaws engaging thel upper and lower surface of the flange of the bar., means for engaging a bolt, and a bolt and nut adapted to engage said clamp and secure the strips of the upper course in osition. t j

4. A oor comprising a lower plastic course, a clamp engaging bar secured therein, a laterally projecting flange, an up er course of strips laid transversely ofl said ar, and a clamp comprising a body member, substantially parallel jaws engaging the upper and lower surface of the flange on said bar, and means for securing the strips of the said upper course to the clamp.

5. A floor comprisin a lower plastic course, a clamp engaging 2(liar secured therein, a laterally projecting flange substantially flush with the upper surface of said plastic course, an upper course of strips laid transversely of said bar, and a clamp comprising a body member, jaws engaging the upper and lower surface of the flange on said bar, and means for securing the strips of the said up- .per course to the clamp.

In testimony whereof I have signed this specification in the presence of-two subscribing witnesses. v

` THOMAS CANTWELL. Witnesses:

OLIN A. FOSTER, A. L. OBRIEN. 

